This article from Yale says there is a large illegal trade in oil. My first thought was that if countries or companies are producing oil, don’t they have the right to sell it to whoever they want? It turns out, oil is being stolen and sold by groups or even individuals who are not the actual producers in some cases, and in other cases it is being smuggled or laundered by producers who are under international sanctions.

In some cases, subnational actors openly export oil despite official prohibition by central governments. The Kurdistan Regional Government in Iraq maintains it is their region’s constitutional right to export oil independently, in defiance of the central government. With Baghdad withholding the region’s 17 percent of budget share, the regional government sought economic independence through hydrocarbons and found a degree of international sympathy, given its role in combatting ISIS and hosting 1.9 million refugees and internally displaced people. The unrefined product was sent via pipeline through Turkey’s Ceyhan port, loaded by various Greek shipping companies on tankers, then stored in Malta or Israel until buyers were found. Shifting routes of Kurdish oil tankers can be observed on sites like tankertrackers.com…

With 90 percent of the world’s goods, 30 percent of which are total hydrocarbons, traded by sea, much of the illegal fuel trade is conducted on water. Two thirds of global daily oil exports are transported by sea, reports the UN Conference on Trade and Development, and a staggering 64 percent of international waters are areas beyond any national jurisdiction. Non-state actors offshore West Africa, Bangladesh or Indonesia take advantage of loopholes created by international law and the law of the sea. Transfer of illegal fuel is often done ship to ship on neutral waters – with one ship commercially legal, recognized as carrying legitimate imports at the final port of destination. Thus, illegal crude from countries such as Libya or Syria finds its way to EU markets.  Recently Russian ships have been found involved in smuggling oil products to North Korea through ship to ship transfers.

Armed theft and piracy also occurs. Hijackings off the coast of Somalia resumed in 2017, the first since 2012, after the international community reduced enforcement. Beyond jurisdictional issues, many governments are overwhelmed by other maritime security threats and cannot prioritize the illegal trade. In fact, fuel traders have reported that the problem is so pervasive that many companies calculate in advance for losses up to 0.4 percent of any ordered cargo volumes.